Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Ford Mustang GT, 2D Convertible, AutomaticFACTORY OEM SERVICE PROCEDURE
Speed Control
SPEED CONTROL PCM DTC LIST
| DTCs | Description | Perform Test |
|---|---|---|
| P0579 | Cruise Control Multifunction Input A Circuit Range/Performance | Go to Pinpoint Test C . |
| P0581 | Cruise Control Multifunction Circuit High | Go to Pinpoint Test C . |
| P1703 | Brake Switch Out of Self-Test Range | Go to Pinpoint Test B . |
| All other DTCs | - | REFER to the Introduction - Gasoline Engines article. |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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